ASTROSAT CZTI

Data Quality Report

Orbit 53238

Creation date: 2025-08-01T06:39:43.270615
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C09_011T06_9000006490_53238cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53238cztM0_level2_quad_clean.evt
Size (bytes)703,324,80086,970,240
Size670.7 MB 82.9 MB
Events in quadrant A5,209,430579,858
Events in quadrant B8,160,401546,079
Events in quadrant C6,588,936548,929
Events in quadrant D5,591,035520,875

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198334
B0285372
C0239502
D0211232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62726109.725765%
B6272148423.660714%
C627278412.500000%
D627270211.192602%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7527 6273 560 560 7.44% 8.93%
B 7527 6272 1111 1111 14.76% 17.71%
C 7527 6273 635 635 8.44% 10.12%
D 7527 6273 605 605 8.04% 9.64%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 3 62 1772793 11175.69 634 618 158.6
A 14 254 474728 2989.83 634 618 158.6
A 7 206 252780 1590.18 634 618 158.6
B 12 33 3812636 30159.63 605 587 126.4
B 2 249 932901 7376.15 605 587 126.4
B 4 81 266649 2104.99 605 587 126.4
C 15 224 1295102 7522.28 620 612 172.1
C 9 38 971277 5640.54 620 612 172.1
C 1 241 778589 4520.83 620 612 172.1
D 6 239 987663 5661.89 610 584 174.3
D 12 3 772040 4425.07 610 584 174.3
D 15 125 350557 2007.44 610 584 174.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter